I would be more concerned about peak somewhere ocatve of half below or above that dip. i have instaled nearly half hundred rooms and in rooms with clear resosonse mode there is always (mostly in theese areas ) peak at 58-65Hz and dip either 80-100hz or (more common) 35-42hz. there is nothing can be done for preventing main room resonanse mode. even if it can be atenuated by digital eq corection ,its level just maches main spl level but resonanse stays(its just much lower in level)its very audible on recording where music piece exactly maches peak..
The pursuit of bass...
Most people would probably say that the most important thing for a speaker to get right is the midrange and I'd have to go along with this myself. If the midrange is too shouty or too recessed or just tonally inaccurate, the other qualities of the speakers are pretty much pointless regardless of how great those qualities might be.
However, with that said, I do not think that the midrange is the most challenging part of a speaker to get right. In my opinion, that award goes to the bass frequencies. Sometimes I listen to a speaker and it is indeed the midrange or treble that is holding back the sound quality, but far more often, for me, it's the low frequencies. I find that I’m more forgiving of midrange flaws. Midrange flaws don’t impact my musical enjoyment as much as bass flaws.
Now, of course, the bass is also the most vulnerable to room acoustics which just exacerbates the problem. But, mostly I blame the speakers themselves. Many fine speaker manufacturers simply ignore the problem by rolling off the bass early. I won't name any specific brands to avoid a flame war, but this is very common. Often I will see specs for frequency response that indicates -6db at 50hz. This is typically very unsatisfying bass. Also, many speakers are not balanced properly across the frequency spectrum so that while they might dig down to 35hz or 40hz, they don't sound like it because the bass is always underwhelming compared to the volume level of the midrange and high frequencies.
The speakers that do attempt to reproduce good solid 40hz bass, often still sound quite bad when reproducing those frequencies. And I'm not talking about pipe organ bass here, I'm talking about the 35hz to 55hz range. Unfortunately, really good minimontors that are amazing with 60hz up, really are missing out on a lot of the presence and atmosphere created by those low frequencies. Emotionally connecting to the music and suspending disbelief is easier with quality bass reproduction. For some reason many audiophiles are willing to live without it. I can understand this since pursing quality bass can be a frustrating endeavor. Also there is cost to consider. Good bass typically comes from bigger speakers and is therefore considerably more costly. But even the best mini-monitors usually commit the sin of omission in the low frequencies.
However, with that said, I do not think that the midrange is the most challenging part of a speaker to get right. In my opinion, that award goes to the bass frequencies. Sometimes I listen to a speaker and it is indeed the midrange or treble that is holding back the sound quality, but far more often, for me, it's the low frequencies. I find that I’m more forgiving of midrange flaws. Midrange flaws don’t impact my musical enjoyment as much as bass flaws.
Now, of course, the bass is also the most vulnerable to room acoustics which just exacerbates the problem. But, mostly I blame the speakers themselves. Many fine speaker manufacturers simply ignore the problem by rolling off the bass early. I won't name any specific brands to avoid a flame war, but this is very common. Often I will see specs for frequency response that indicates -6db at 50hz. This is typically very unsatisfying bass. Also, many speakers are not balanced properly across the frequency spectrum so that while they might dig down to 35hz or 40hz, they don't sound like it because the bass is always underwhelming compared to the volume level of the midrange and high frequencies.
The speakers that do attempt to reproduce good solid 40hz bass, often still sound quite bad when reproducing those frequencies. And I'm not talking about pipe organ bass here, I'm talking about the 35hz to 55hz range. Unfortunately, really good minimontors that are amazing with 60hz up, really are missing out on a lot of the presence and atmosphere created by those low frequencies. Emotionally connecting to the music and suspending disbelief is easier with quality bass reproduction. For some reason many audiophiles are willing to live without it. I can understand this since pursing quality bass can be a frustrating endeavor. Also there is cost to consider. Good bass typically comes from bigger speakers and is therefore considerably more costly. But even the best mini-monitors usually commit the sin of omission in the low frequencies.